97553987 has 2 divisors, whose sum is σ = 97553988. Its totient is φ = 97553986.

The previous prime is 97553969. The next prime is 97554049. The reversal of 97553987 is 78935579.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97553987 - 2²⁰ = 96505411 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (97553957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48776993 + 48776994.

It is an arithmetic number, because the mean of its divisors is an integer number (48776994).

Almost surely, 2^97553987 is an apocalyptic number.

97553987 is a deficient number, since it is larger than the sum of its proper divisors (1).

97553987 is an equidigital number, since it uses as much as digits as its factorization.

97553987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2381400, while the sum is 53.

The square root of 97553987 is about 9876.9421887546. The cubic root of 97553987 is about 460.3431387407.

The spelling of 97553987 in words is "ninety-seven million, five hundred fifty-three thousand, nine hundred eighty-seven".